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| CRD not passing 1500 rpm when hot http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=3&t=65647 |
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| Author: | shadow333 [ Tue Mar 06, 2012 8:49 am ] |
| Post subject: | CRD not passing 1500 rpm when hot |
This past weekend I went through a mudhole and got my entire engine covered in mud after which I got a water in fuel indicator. Everything was still working fine except for my electric fan that got fried in the process. The next day while driving back home it suddenly started jerking and wouldn't pass 1500 rpm. It was as if it was hitting the limiter but at 1500 rpm. Eventually towed it back home where it was properly washed. Left it overnight and the next morning it started fine and drove normally until the heat gauge reached 1/4 way then the same limiting issue started again, but at 3000 rpm. As the engine got warmer the limiting dropped all the way to 1500 rpm when normal operating temp was reached. Any idea what I might have broken in that mudhole to cause this behavior. Thanks in advance. |
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| Author: | bugnout [ Tue Mar 06, 2012 12:18 pm ] |
| Post subject: | Re: CRD not passing 1500 rpm when hot |
You will get more responses if you post this in the CRD section. Sounds like your ECM has decided you should be in limp mode. Did you get a check engine light? If so you need to read the codes using an OBDII reader. Most autoparts stores have them and will read the codes for you. |
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| Author: | maxwellp [ Tue Mar 06, 2012 11:01 pm ] |
| Post subject: | Re: CRD not passing 1500 rpm when hot |
Sounds like it is de-fueling because it thinks it is hot. You will need to get it hooked up to a Scanner to see what it is doing. As in when it will only run 1500 rpm how hot is it showing on the Scanner. Water and mud in a bad sensor plug could give bad readings. 
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| Author: | shadow333 [ Mon Oct 01, 2012 4:58 am ] |
| Post subject: | Re: CRD not passing 1500 rpm when hot |
Sorry for only posting back now. Got the Libby fixed about two weeks after my initial post. Thanks for the responses. It was infact a case of de-fueling because it was running hot and also the air filter was baked solid. I pulled out the Intercooler, A/C Condensor and Radiator and clened the fins out. It is amaxing how much dirt and mud can collect in this trio. I cleaned out the air intake and replaced the air filter. The filter was rock hard as it must have gotten wet with the initial entry into the pit. She now runs as cool as ever. I would recommend to everyone to clean out the Intercooler, Radiator and A/C condensor every now and then. My Libby was getting hot on very warm days before the mudhole insident and now the needle never moves above halfway. Thanks again |
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